Play ball



Patented Nov. 7, 1944 inverltion concerne a resilerit play hall 'of the t pe used.by:children ami grown-ups for exercse; Such a play hall s'usually well balanced, round and preferably spher ical., It Wll bounbe off the ground or wall or from the surface 01? ar1y obje ct substantially in a direction "i1fwhbhl beam O f light would be reflected by S11Chsulrffalce,if projectol thereonto. "'I'It 15 an Qbject of this' nvention to provicle a ballfl Whch, whle 4substantally balanced as t.o 'Wight, will not bouncejofi' a fsurface' in the acf'dt1txheddirctifi; but W11 deviate from the aci:stimdjpath or course f refiection.. The use f s1idl b';ll Will nebesstate gr'eater skill qr agil- 't 'i'ipa'rt of'the players; "j yrl'fthej Other, har1dt i,also an object of ths irixifer1tion'ftfprqvid on a .ball of the type ju,st dribe'dfa srfac w hi ch allows theball to reb6ndinkinorrr'ial' Way, i'f such surface strikes Wh the"ballis'buncedu V Whle provding rr'egulartie's as to the s ur face, I desire tol.1aveit pentrall balancedas to Weight'. A Die'f'etredball is divisible nto like sectors each having an rregularly formed base. Other objects of ths nvention W1l be learnecl from the following descrpton. Such descrption of the invention s rendered by Way of the showing of the accompanyng drawing and explanaton thereof, such description beng given by way of illustration and not in limtaton of the invention.

In the drawing:

Fig. 1 s a top vew and Fig. 2 a corresponding cross-sectioned sicle view of an embodiment of this invention which is postoned as t would normally rest on a level surface.

Fgs. 4 and 3 are corresponcling top and scle VieWs of another embodment of this invention,

the side View of Fig. 3 being cross-sectioned in pari; only.

Fig. 5 shows the elevation f stll another modification of thisinventon, the view being part ly cross-sectionecl. y

Similar numeralsrefer to similar parts throughout the various vews.

In a preferred way of realzin-g the object of this invention the round or spherical surface ci a hall is interrupted in a regular pattern, so that it may strike, when th1 oWn or fallng, either at a spherical or at a non-sphercal portion' of its surface. Such a ba1l is substantially balanced, i. e., its center of -gravity is substantially cen trally allocated therein, and there may be symmetry as to integrated like sectors.

In a gam'e UNITED STATES UFFICE 2,362,064; f 1 f "'PLAY BAIL jj a hjme Giesinger,lNyb Ydrk, N. Y. Applicatian May 11, 1942, Serial No. 442,473

lClai r nl ci.z,7 ssif the' user ma apply his or her skll ri throwing the ball's that it strkes either 'at a sjpherical portion of its surface and reboundg regularly so ho speak, or at an eccentrc or non spherical portion di its surface in which case it will rebund having for nstance concave recesses on apposite 151 sdes, iszillustmted in Figs. 3 and 4.

recesses l2 and I3 on apposite sides.

That embochment shovvs a cerltral zone II and concave may rebound in a most unexpected manner, and.

may even strike in short succession at tvvo points of one of those circular edges, before t rebounds as a Whole. Geometrcally speaking, and disregardng the concavity of the recesses on opposte sides, a play hall of Figs. 3 and 4 may be said to be derived from a sphere by superimposing thereon a solid having comparatively closely spaced, Iarge parallel surfaces. In logical procedure a play hall of ths invention may also be produced by intersecting a sphere with an equilateral three-cornerecl prism. But for purposes of regularty, and in order to offer to the player a hall to whch ha may systematically apply his skill, I give particular preference to balls segmented in conformity With regular polyhedra superimposed thereupon. Thus a combination of tetrahedron and sphere yields a form of my invention, in whch experience and skll may be successfully matched against the uncertaintles of a game.

Such a ball, having a spherical portion l4 and the relatively tetrahedrally dsposed sides l5, IB, I I and I8, is emboded in the showing of Figs. 1 and 2.

It is understood that hexahedron and octahedron may be similarly incorporated in a, ball for purposes of ths nvention. But I gve preference to the tetrahedral-sphercal artangement, because that arrangement is not symmetrical concernng the three planes of a right system 

